SIWARD

Oscillators; monolithic crystal filters; antennae filters; computer screen filters; optical filters; electronic circuits recording programs for amusement apparatus for use with liquid crystal screens; liquid crystal displays; liquid crystal display projectors; transducers that utilize ultrasonic oscillations to test for stress and fatigue in metal and metal structures; transducers that utilize ultrasonic oscillations to treat and reduce stress and fatigue of metal and metal structures; silicon wafers; structured semi-conductor wafers